Cette leçon contient 10 diapositives, avec quiz interactif, diapositives de texte et 1 vidéo.
Éléments de cette leçon
TOPIC 1 - OBSERVING THE WORLD
§1.5 - Light & Colour
Slide 1 - Diapositive
§1.5 - Learning Goals:
I can explain what a light wave is and how it travels.
I know what all the colours of the visible spectrum are, in order from lowest to highest frequency.
I know that white light is a combination of all colours in the visible spectrum.
I know what colours of light are reflected or absorbed based on an object’s colour.
I know that white objects reflect all light and black objects absorb all light.
Slide 2 - Diapositive
§1.5 - Key Words:
Light
Frequency
Visible spectrum
Invisible spectrum
Colours
Eyes
Prisms
Slide 3 - Diapositive
Light
Slide 4 - Carte mentale
Slide 5 - Vidéo
§1.5 - Light:
Is a form of energy that travels in waves, but unlike sound, light does not need molecules to help it spread.
Allows people and animals to see things.
Slide 6 - Diapositive
Light Sources
There are 2 types of light sources
Natural light
The sun and stars
Fire
Lightening
Artificial light
A lamp
Telephone screen
Laser
Slide 7 - Diapositive
Light Sources
The visible spectrum is made of the colours we can see with the naked eye. Different colours of light have different frequencies. Which color has the lowest frequency? The highest?
p. 32-37
Slide 8 - Diapositive
White Light
White light is made of all the colours of the visible spectrum.
We can split white light into its colours by using a prism.
p. 32-37
Slide 9 - Diapositive
How do we see colour?
The human eye sees color when light bounces (reflects) off an object and goes into our eye. The color of light that gets reflected is the color that we see.
